It sounds like you'd need to lie to a lawyer, which (I assume has) legal implications:

Users of this product will be able to enter the identity of their perpetrator into the escrow. This data can only be decrypted by the Callisto Options Counselor (a lawyer), when another user enters the identity of the same perpetrator. If the perpetrator identities match, both users will be put in touch independently with the Options Counselor, who will connect them to each other (if appropriate) and help them determine their best path towards justice. The client relationships with the Op- tions Counselors are structured so that any client-counselor communications would be privileged.

edit: from https://www.projectcallisto.org/callisto-cryptographic-appro...